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New research shows that the upper troposphere and lower stratosphere work to transform elemental mercury into oxidized mercury, which can easily be deposited into aquatic ecosystems and ultimately enter the food chain. Daniel Jaffe, a science and technology professor at University of Washington Bothell, is coauthor of the paper.
A team led by the University of Alberta has confirmed that inorganic mercury (Hg) found worldwide in ocean water is transformed into monomethylmercury (MMHg)—a potent and bio-accumulative neurotoxin—in the seawater. In a 1991 paper discussing concerns with mercury and monomethylmercury, William F. 159-166.
The largest drop in emissions in 2012 came from coal, which is used almost exclusively for electricity generation. During 2012, particularly in the spring and early summer, low natural gas prices led to competition between natural gas- and coal-fired electric power generators. Duke study.
Researchers at Chalmers University of Technology, Sweden, have developed a method that can reduce the levels of mercury in sulfuric acid by more than 90%, even from low levels. It is therefore a worldwide challenge that sulfuric acid often contains one of the most toxic substances: mercury.
under illumination from a low pressure mercury lamp. Results from using the ultraviolet (UV) photolytic process for production of hydrogen from aqueous Na 2 SO 3 solutions showed that the quantum efficiency of hydrogen production can reach 14.4%
More forms of mercury can be converted to methylmercury—a form of mercury that can be taken into the food chain and eventually can result in mercury-contaminated fish—than previously thought, according to a study led by a team of researchers from Oak Ridge National Laboratory (ORNL) published in Nature Geoscience.
Coal-powered synthetic natural gas (SNG) plants being planned in China would produce seven times more greenhouse gas emissions than conventional natural gas plants, and use up to 100 times the water as shale gas production, according to a new study by Duke University researchers published in the journal Nature Climate Change.
The least expensive way for the Western US to reduce greenhouse gas emissions enough to help prevent the worst consequences of global warming is to replace coal with renewable and other sources of energy that may include nuclear power, according to a new study by University of California, Berkeley, researchers. —Daniel Kammen.
The Department is posting Notices of Intent to issue this funding, supporting the following initiatives: Clean Coal Power Initiative. million) : Funding will permit the existing algae-based carbon mitigation project to expand testing with a coal-based gasification system. Arizona Public Services Modification ($70.6
Breathing vanadium-rich aerosols has unknown but potentially adverse health impacts, according to the researchers, who note that the human impacts on the global vanadium cycle parallel impacts on the global cycles for lead and mercury. Vanadium is a trace metal found in many earth materials, including petroleum and coal.
Stanford University has launched a new research initiative to study comprehensively the development and use of natural gas. Compared with burning coal, natural gas emits about half the carbon dioxide and substantially less soot, mercury and sulfur. —Mark Zoback, a professor of geophysics and NGI’s director.
But its monumentally less pollution , even on the national (half-coal) grid. For more on plug-in hybrids and V2G, see CalCars Resources , University of Delaware V2G Research Center , and papers from a June 2005 conference in Seattle. Dont PHEVs just shift pollution from gasoline cars to power plants? So for now were sticking with PHEV.
San Jose Mercury News ). Kwong said Toyota is concerned PHEVs might just replace gas problems with more coal emissions, since the cars will require more electricity from utilities. in China they make electricity by burning coal, so China is not the place for electric cars," [Tatehito Ueda, a managing officer at Toyota Motor Corp.]
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